The L4949DR2 is a low dropout linear voltage regulator designed to provide a stable output of 5.0 V with a maximum output current of 100 mA. It operates within a supply voltage range of 5.0 V to 28 V and can withstand transient supply voltages up to 40 V. The device features a very low dropout voltage of less than 0.4 V, making it suitable for applications where power efficiency is critical. Additional functionalities include a reset circuit that monitors the output voltage, a programmable reset pulse delay, and a voltage sense comparator. The L4949DR2 also incorporates thermal shutdown and short circuit protection, enhancing its reliability in automotive and other demanding environments. It is available in a Pb-free SOIC-8 package, making it compliant with environmental regulations. This product is particularly well-suited for microcontroller and microprocessor controlled systems.
Manufacturer: ON Semiconductor
Win Source Part Number: 002264-L4949DR2
Packaging: Reel - TR
Mounting: SMD (SMT)
Regulator Topology: Positive Fixed
Voltage - Dropout (Typical): 0.3V @ 100mA
Number of Regulators: 1
Output Type: Fixed
Control Features: Reset
Output Current: 100mA
Output Voltage: 5V
Categories: Integrated Circuits
Status: Obsolete(EOL)
Temperature Range - Operating: -40°C to 125°C
Case / Package: 8-SOIC
Maximum Input Voltage: 28V
Nominal Output Voltage (Min/Fixed): 5V
Dropout Voltage-Max: 0.5V @ 100mA
Operating Supply Current: 260μA to 5mA
Protection Features: Over Temperature, Short Circuit
Popularity: Medium
Fake Threat In the Open Market: 46 pct.
Supply and Demand Status: Balance
5V 100mA LDO Linear Regulator, 8-Pin SOIC, 6-28V In Product overview: L4949DR2 from onsemi is a LDO Voltage Regulator IC for stable power rails, DC-DC conversion, battery-powered electronics, automotive modules, and embedded power management. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include LDO, 5V, 100mA, 28V, SOIC. Search-friendly keywords include voltage regulator, LDO, buck converter, boost converter, power rail, 5V, 100mA, 28V, LDO Voltage Regulator IC, Linear & Switching Voltage Regulators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 776-L4949DR2 can be used for catalog matching and distributor lookup.
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| Win Source Electronics | ERSAELECTRONICS PTE. LTD. | DigiKey | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | |
|---|---|---|---|---|---|
| Product Category | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Voltage Regulators | IC Linear Voltage Regulators |
| Product Number | 002264-L4949DR2 | 776-L4949DR2 | L4949DR2OS-ND | L4949DR2 | L4949DR2 |
| Product Name | PMIC - PMIC - Voltage Regulators - Linear - L4949DR2 | 5V 100mA 28V SOIC LDO Voltage Regulator IC | Voltage Regulators - Linear, Low Drop Out (LDO) Regulators | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear | PMIC - Voltage Regulators - Linear |
| Regulator Type | Low Dropout | Standard | |||
| Output Polarity | Positive | Positive | |||
| Output Voltage Type | Fixed; Fixed | Fixed | |||
| Package Type | SOIC; Other; 8-SOIC | SOIC; Other; "8-SOIC (0.154"", 3.90mm Width)" | SOIC | ||
| Life Cycle Stage | PhaseOut; Obsolete(EOL) |
